Backpack



FIG. 1 is a perspective view showing the rear side and the left-hand side of a backpack according to the invention.

FIG. 2 is a perspective view according to FIG. 1, showing the backpack with an open lid.

FIG. 3 is a perspective view according to FIG. 1 showing the backpack in an extended state.

FIG. 4 is a perspective view according to FIG. 3 showing the backpack in extended state and with open lid.

FIG. 5 is a perspective view showing the backpack from the front side and the right-hand side.

FIG. 6 is a perspective view showing the rear side (inside) and left-hand side of a harness forming part of the backpack of FIGS. 1-5.

FIG. 7 is a perspective view showing the front side and the right-hand side of a harness according to FIG. 6.

FIG. 8 is a perspective view from the rear side and the left-hand side of a shell forming part of the backpack according to FIGS. 1-5; and,

FIG. 9 is a perspective view from the front side (inside) and right-hand side of the shell according to FIG. 8.

FIGS. 6 through 9 are included for clarity of illustration.

Those portions of the design which are not shown do not form any part of the claimed design. 

The ornamental design for a backpack, as shown and described. 